According to a brand new examine revealed within the journal Archives of Industrial Hygiene and Toxicology, urine samples adulterated by numerous family cleansing merchandise will yield false adverse outcomes for cannabinoids and are undetectable by laboratory screening. The examine, titled Effect of urine adulterants on industrial drug abuse screening check strip outcomes, was first reported on by NORML.

For the examine, researchers from Serbia adulterated drug-positive urine samples with minute quantities of family cleansing merchandise. “The addition of several additives – including vinegar, lemon juice, bleach, and benzalkonium chloride (an antiseptic agent used in hand sanitizer) – yielded false positive results for cannabinoids on immunochromatographic strips tests.” The use of Visine eye drops didn’t alter the check outcomes.

During the examine urine reagent strips didn’t establish the presence of three adulterants which had been vinegar, lemon juice, and citric acid, Follow up pH testing did ultimately reveal inconsistencies within the samples adulterated with lemon juice and citric acid. “By contrast, samples adulterated with vinegar consistently avoided laboratory detection.”

The examine concludes by stating: “To the best of our knowledge, until this study of ours, no one has reported research data about household chemicals interfering with urine drug test results. … In terms of tampering, our study shows that UDST [urine drug screening tests] for cannabinoids are susceptible to urine adulterants, as [they] yielded six false negative results. … The most potent adulterant that barely changed the physiological properties of urine specimens and therefore escaped adulteration detection was vinegar. … Our findings raise concern about this issue of preventing urine tampering and call for better control at sampling, privacy concerns notwithstanding, and better sample validity tests.”

The examine’s full summary states:

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